Underframe for cars and tenders.



W. D. LOWRY.

Patented May 25, 1909.

2 SHEETS-SHEET 1 UNDERPRAMEFOR GARS AND TENDBRS. APPLICATIN HLBD JUNE 1,190s.

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W. D. LOWRY.

UNDERFRAMB PoR GARS AND TBNDBRS.

APPLIOATION FILED JUNE 1, 1908.

922,787. Patented May 25, 1909.

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WILLIAM D. LOWRY, OF ST. LOUIS, MISSOURI.

UNDERFRAME FOR CARS AND 'J'.ENDEIELS.

To all whom it may concern:

Be it known that'I, WILLIAM D. LoWRY, a citizen of the United States,residing at St. Louis, in the county of St. Louis City and State ofMissouri, have invented new and luseful Improvements in Underframes for`sectional view on 4the line 2-2 of Fig. 1.

Figs. 3 and 4 are transverse sectional views on the lines '3--3 and 4-4of Fig. 1. Fig. 5 is a sectional view on the line 5-5 of Fig. 3.

Referring to the drawings, the underfraine comprises a single centersill 6 which extends throughout the length of the underframe and is madein substantially inverted U- shape in a single casting. This center'sill is preferably made deeper between the bolsters than at its ends andit is provided with lateral llanges 7 which project outwardly from itsbottom throughout the length of the center sill except at the bolsterswhere the center sill is provided interiorly with a cross `web 8 (Fig.3*) to strengthen the sides ofthe center sil Each bolster 9 is made in asingle casting with a central recess 10 to receive the center sill 6.The cter sill is provided with integral side lugs 11 which are arrangedto rest on the bolster in depressions 12 therein so that the plane ofthe top of the bolster will be flush with the plane of the top of thecenter sill. The bolster is fastened to the center sill by bolts orrivets 13 which pass through the lugs 11 on the center sill and the topflange 9 of the bolster (Fig. 3). The bolster may be provided with interal dowel pins 14 to enter openings 14 in t e lugs 11, if desired (Fig.5). The arch 15 which forms the integral connection between the twosides of the bolster lies 4beneath the center sill and provided with anintegral center bearing 16. The bolster is also provided With sidebearings 17 and it may be de- .pressed at 18 to receive the stringere 19and specificati@ of Letters Patent.

Application led June 1, 1908.

Patented May 25, 1909.

Serial N0. 435,854. l

,l provided with integral lugs 20 to support the stringere 21. madelevel through its length and the str ers laid'thereon, if desired.

Each cross tie consists of two parts 22 cast alike and riveted or boltedto the sides o-f the center sill. The cross ties are constructed, likethe holsters, with depressions 23 to receive the integral side'lugs 24on the center sill, with depressions 25 to receive the stringers 19, andwith lugs 26 to support the stringers 21, but they may also be varied indetails of construction, like the holsters, without departing from myinvention.

I may use side sills of any suitable construction such asl the channelbars 27 which are riveted or bolted to the ends of the bolsters andcross ties, and stringers 28 may be supported on lugs 2S integral withthe bolster and cross ties as shown in Figs. 3 and 4, or in any othersuitable manner. I may also use end .sills of any suitable constructionand in the drawings I have illustrated one form which may be used andwhich comprises a single casting 29 made substantially in L- form and inwhich the wood end sill 30 may be arranged as illustrated in Fig. 2.Side sills and end sills of any other suitable form may be used with myimproved center sill, bolsters and cross ties in making an underframeembodying the invention.

The sides of the bolsters are preferably made of a somewhat heavierconstruction than the sides of the cross ties `and are connected by thearch 15 to provide additional strength. This is more especiallyimportant to hold the underframe in shape and the car is jacked up forany purpose, this being done usually 'at or near the holsters 1n whichcase the top of the bolster 1s put under My invention provides a strongand substantial under-frame especially throughout the longitudinalcenter of the car where the load is principally carried. The centersill, bolsters and cross ties are preferably made of steel castings andthe side sills and end'sills may also be made of steel castings or ofrolled or pressed steel. I may also use diagonal braces 31 at the endsof the frame and cnoss braces 32 whenever they are found desirable. Thecross ties may also be provided with dowel pins llike the holsters toenter o 1enings in the side lugs 24 on the center s1 The top of thebolster may, l

prevent it from yielding or buckling when compression and the bottomunder tension.

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What I claim and desire to secure by lietters Patent is:

1. In an underfraine' for cars and tenders,

a cast steel bolster provided centrally' with a lI 2. In an underframefor cars and tenders,

a cast steel bolster provided centrally with a recessopening at the topthereof, a center sill seated in said recess and made in substan- 1tially inverted U-shape in cross section, and i l the center sillprovided with an opening, a

integral side lugs on said center sill )rejecting over the top of thebolster and fastened thereto.

3. In an underfranie for cars and tenders, a cast'steel bolster providedcentrally with a recess opening at the top thereof and depressions inits top adjacent to said recess, a center sill seated in said recess andmade in substantially inverted U-sha e in cross section, and integralside lugs on t e center sill seated in said depressions and fastened tothe bolster.

4. In an underframe for cars and tenders, a cast steel bolster providedcentrally with a recessopening at the top thereof, a center sill seatedin said recess and made in substantially inverted U-shape in crosssection, and an interiorly arranged integral web at the bottom of thecenter sill above the bolster.

5. In an underframe for cars and tenders, the combination of a pair ofbolsters, a center sill extending throughout the length of theunderframe and made in substantiall inverted U-shape in cross section,said bo sters being each provided centrally with a recess o ening at thetop thereof and said center sil being seated in said recess, andintegral outwardly projecting side flanges at the lower edges of thesides of the center sill between the bolsters and between said bolstersand the ends of the center sill.

6. In an underframe for cars and tenders, the combination of a pair ofbolsters, a center sill extcndingthroughout the length of the underframeand made in substantiall inverted U-shape in cross section, said bosters being each provided centrally with a recess opening at the topthereof and said center sill being seated in said recess, interiorlyarranged integral webs on the center sill at the bottoni thereof abovethe lbolsters, and integral outwardly projectin flanges at the loweredges of the sides of t e center sill between the bolsters and'betweenthe bolsters and the ends of the center sill.

7. In an underframe for cars and tenders, a center sill extendingthroughout the length of theunderframe and made in one casting insubstantiallyY inverted U-shape in cross section, interiorly arrangedintegral webs onV ;nected thereto, and outwardly the center sill wherethe bolsters are conprojecting flanges at the sides of the center si lbetween said webs and between said webs and the ends of the center sill.

8. In an underframe for cars and tenders, the combination of a centersill, integral side i lugs on said center sill at the top thereof, and

i l l transverse member fastened to said lug,

cross ties fastened to said center sill and provided with depressions toreceive said lugs.

9. In an underfraine for cars and tenders, the combination of a centersill, a side lug on and l a pin on said member seated in said opening'.

10. In an underfralne for cars and tenders, the combination of a centersill, outwardly projecting lugs on the center sill at the top thereofprovided With openings, a cast steel bolster provided centrally with' arecess to receive said center sill, and pins on the bolster seated insaid openings. l

11. In an underframe for cars and tenders, a cast steel bolster providedcentrally with a recess openin at the top thereof, and a cast steelcenter si l made in one casting and constructed to fit in said recessand against the side and vbottom walls thereof.

112. In an underframe for cars and tenders, a cast steel bolsterprovided centrally 4with a recess opening at the top thereof, and acenter sill constructed to fit in said recess and made substantiallyrectangular in cross section with a top, a bottom and sides at `thebolster. j

13. In an underframe for cars and tenders, a cast steel bolster providedcentrally with a recess opening aty the top thereof, and a center sillconstructed to fit in said recess flush with the top of the bolster.

14. In an underframe for cars and tenders. a cast steel bolster providedcentrally with av recess opening at the top thereof, and a center sillconstructed to fit in said recess flush with the top of the bolster and.with its sides and bottom engaging the sides and bottom of the recess. y

15. In an underfranie for cars and tenders, the combination of a air ofcast steel bolsters each provided centra l with a recess opening at thetop thereof, an a cast steel center sill made in one casting and seatedin said recess, said center sill being substantially rectangular incross section at the bolsters and substantially inverted U-shape incross section.

Trios. J. BREIDEOKER, E. F. GUIBOR.

